Vitamin A ： Pediatric Immune Support

Q: Does Vitamin A help with Pediatric Immune Support?

Based on 10 studies with 5,000 participants, there is moderate evidence from clinical studies that Vitamin A may support Pediatric Immune Support management. Our evidence grade is B (Good Evidence).

Q: How much Vitamin A should I take for Pediatric Immune Support?

Studies have used various dosages. A commonly studied range is 700-900 mcg RAE/day. Always consult your healthcare provider before starting any supplement regimen.

Q: Are there side effects of Vitamin A?

Reported side effects may include Hepatotoxicity at chronic high doses, Birth defects (teratogenic at high doses during pregnancy), Nausea and headache, Bone density reduction with long-term excess. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

Q: How strong is the evidence for Vitamin A and Pediatric Immune Support?

We rate the evidence as Grade B (Good Evidence). This rating is based on 10 peer-reviewed studies with 5,000 total participants. The overall direction of effect is positive.

Vitamin A supplementation in deficient children may significantly reduce morbidity and mortality from measles and diarrheal disease. No nutritional deficiency is more consistently associated with increased infectious disease susceptibility than vitamin A deficiency.

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結論

Key Study Findings

Review n=26282 988 weeks

Inadequacy of Immune Health Nutrients: Intakes in US Adults, the 2005-2016 NHANES.

Dose: 45% vs: None Outcome: None 効果: None None

対象集団: None

Review

Diet and nutritional factors in inflammatory bowel diseases.

Dose: None vs: None Outcome: None 効果: None None

対象集団: IBD patients (diet and nutrition)

Observational Study n=61 260 weeks

Vitamin and zinc status pretreatment and posttreatment in patients with inflammatory bowel disease.

Dose: None vs: None Outcome: Vitamin and zinc status in IBD patients 効果: None None

対象集団: Patients with inflammatory bowel disease

Review

Influence of mineral and vitamin supplements on pregnancy outcome.

Dose: None vs: None Outcome: Pregnancy outcome (birth weight, preeclampsia, NTD) 効果: None None

対象集団: Pregnant women

Review

Cod liver oil, young children, and upper respiratory tract infections.

Dose: None vs: None Outcome: vitamin D levels 効果: None None

対象集団: children

Randomized Controlled Trial n=584 52 weeks Double-blind

Interaction of zinc or vitamin A supplementation and specific parasite infections on Mexican infants' growth: …

Dose: Zinc 20mg/day; VitA 20000-45000 IU every 2 months vs: Placebo Outcome: Interaction of zinc or vitamin A supplementation and … 効果: None p<0.05

対象集団: None

Key Statistics

研究数

5000

参加者数

↑

Positive

グレード

Referenced Papers

Inadequacy of Immune Health Nutrients: Intakes in US Adults, the 2005-2016 NHANES. Review

Nutrients 2020 75 件の引用

Diet and nutritional factors in inflammatory bowel diseases. Review

World journal of … 2016 238 件の引用

Vitamin and zinc status pretreatment and posttreatment in patients with inflammatory bowel disease. Other

Journal of pediatric … 2014 38 件の引用

Influence of mineral and vitamin supplements on pregnancy outcome. Review

European journal of … 2012 225 件の引用

Cod liver oil, young children, and upper respiratory tract infections. Review

Journal of the … 2010 11 件の引用

Interaction of zinc or vitamin A supplementation and specific parasite infections on Mexican infants' growth: a randomized clinical trial. RCT

European journal of … 2009 24 件の引用

The immune system: a target for functional foods? Review

The British journal … 2002 358 件の引用

Chemoprevention of bladder cancer. Review

The Urologic clinics … 2002 20 件の引用

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

一般的な使用量

general:: 700-900 mcg RAE/day
immunesupport:: 900 mcg RAE/day

上限量： 3,000 mcg RAE/day (preformed vitamin A)

研究で検討された用量

用量	期間	効果	N
45%	988 weeks	Positive	26282
None	--	Mixed	--
None	260 weeks	Positive	61
None	--	Positive	--
None	--	Mixed	--
Zinc 20mg/day; VitA 20000-45000 IU every 2 months	52 weeks	Mixed	584
Probiotics, prebiotics, fatty acids, vitamins	--	Positive	--
Various nutrients (selenium, vitamins, green tea)	--	Positive	--

推奨摂取タイミング： With meals containing fat

Safety & Side Effects

報告されている副作用

⚠ Hepatotoxicity at chronic high doses
⚠ Birth defects (teratogenic at high doses during pregnancy)
⚠ Nausea and headache
⚠ Bone density reduction with long-term excess

既知の相互作用

● Retinoid medications (additive toxicity risk)
● Orlistat (reduces absorption of fat-soluble vitamins)
● Alcohol (increases hepatotoxicity risk)
● Tetracycline antibiotics (increased intracranial pressure risk)

耐容上限摂取量： 3,000 mcg RAE/day (preformed vitamin A)

サプリメントの摂取を開始する前に、必ず医療専門家にご相談ください。

Frequently Asked Questions

Does Vitamin A help with Pediatric Immune Support?

Based on 10 studies with 5,000 participants, there is moderate evidence from clinical studies that Vitamin A may support Pediatric Immune Support management. Our evidence grade is B (Good Evidence).

How much Vitamin A should I take for Pediatric Immune Support?

Studies have used various dosages. A commonly studied range is 700-900 mcg RAE/day. Always consult your healthcare provider before starting any supplement regimen.

Are there side effects of Vitamin A?

Reported side effects may include Hepatotoxicity at chronic high doses, Birth defects (teratogenic at high doses during pregnancy), Nausea and headache, Bone density reduction with long-term excess. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

How strong is the evidence for Vitamin A and Pediatric Immune Support?

We rate the evidence as Grade B (Good Evidence). This rating is based on 10 peer-reviewed studies with 5,000 total participants. The overall direction of effect is positive.

Related Evidence

に関する他の成分： Pediatric Immune Support

Iron C

総合評価

Evidence Strength72%

High confidence

研究の内訳

RCT (1)Meta (0)Other (9)

代替成分との比較

この症状に対する他の成分との比較をご覧ください。

に関するすべての成分を見る： Pediatric Immune Support

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FDAに関する免責事項: これらの記述は米国食品医薬品局（FDA）による評価を受けていません。本ウェブサイトの製品および情報は、疾病の診断、治療、治癒、または予防を目的としたものではありません。表示されているエビデンスグレードは、公開された査読済み研究の分析に基づいており、医療上の助言を構成するものではありません。サプリメントの摂取を開始する前に、必ず医療専門家にご相談ください。